From: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Date: Tue, 18 Nov 2014 19:30:56 +0000 (-0500)
Subject: Fix: Missing rcu_read_lock in cmd_list_events()
X-Git-Url: http://git.efficios.com/?p=lttng-tools.git;a=commitdiff_plain;h=b11feea58d73a097e4e1447473798822da28a70d;ds=sidebyside

Fix: Missing rcu_read_lock in cmd_list_events()

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
---

diff --git a/src/bin/lttng-sessiond/cmd.c b/src/bin/lttng-sessiond/cmd.c
index 7baef8828..33ab492da 100644
--- a/src/bin/lttng-sessiond/cmd.c
+++ b/src/bin/lttng-sessiond/cmd.c
@@ -2552,10 +2552,12 @@ ssize_t cmd_list_events(int domain, struct ltt_session *session,
 			struct lttng_ht_iter iter;
 			struct agent *agt;
 
+			rcu_read_lock();
 			cds_lfht_for_each_entry(session->ust_session->agents->ht,
 					&iter.iter, agt, node.node) {
 				nb_event = list_lttng_agent_events(agt, events);
 			}
+			rcu_read_unlock();
 		}
 		break;
 	default: